Fuel diversity, or the ability to substitute fuels such that energy systems are not highly vulnerable to shortages or price increases of a particular fuel, is greatly affected by renewable energy resources. Scientists have for a long time attempted to find a resolution to the energy crisis by trying to find both alternative and renewable energy resources. Traditionally, renewable energy has been popular for two primary reasons: First, renewable energy sources tend to be less vulnerable to large-scale supply disruptions; Second, most forms of renewable energy have less of an impact on the environment than conventional energy. This article explores the complex topics of “Renewable Energy” and “Fuel Diversity” by analyzing fuel diversity and energy security, fuel diversity today, utility renewable energy programs today, renewable energy after restructuring, and green pricing.